The act or practice of playing cymbals; the sound produced by clashing cymbals together or striking them rhythmically.
From cymbal + -ing (gerund suffix creating nouns from verbs). The gerund form transforms the action of playing into a noun that can be used as a subject or object.
Cymballing is one of those gerunds that becomes its own art form—the percussionist's cymballing technique can be as expressive as a violinist's bowing!
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